[[folder:Captain James T. Kirk (WilliamShatner)]]

-> "'''All I ask is a tall ship, and a star to steer her by.' You could feel the wind at your back in those days, the sound of the sea beneath you. And even if you take away the wind and the water, it's still the same... The ship is yours, you can feel her. And the stars are still there, Bones.''"
--> Kirk, "The Ultimate Computer"

TheCaptain. James Tiberius Kirk leads his ship, the ''Enterprise,'' through the adventure of the week--hostile cultures, supercomputers, places which look suspiciously like Earth, [[TimeyWimeyBall time-travel shenanigans]]. He was notorious for his many brief romances, some of which ended tragically, but mostly they failed because he named the ''Enterprise'' herself as the woman in his life. Although he took the dangers to his crew very seriously, he also maintained a light-hearted attitude and bantered with the other two members of his PowerTrio frequently.

Although boldly going and playing by his own rules worked out pretty well during the height of his career, the movies {{Deconstructed}} his legend by showing how high the cost of such cavalier actions could be.
* ActingForTwo: In three episodes (Id!Kirk, Android!Kirk, and Mirror!Kirk) and in [[Film/StarTrekVITheUndiscoveredCountry the sixth movie]].
** He also portrayed [[spoiler:his dead brother]] in one episode, the only time in the history of the franchise that he did not play James T. Kirk, or something inhabiting or mimicking the form of James T. Kirk.
* AIIsACrapshoot: Kirk went up against malevolent computers so often that it became something of a RunningGag in the {{fandom}}.
* AmbiguouslyJewish: An idea with some popularity in the {{fandom}} since both WilliamShatner and ChrisPine (who played Kirk in the [[Film/StarTrek 2009 reboot]]) are Jewish.
* AntiHero: Sixties sex symbol or not, Kirk stumbled into ClassicalAntiHero in ''The Wrath of Khan'' where his mid life crisis wears heavy and some poor choices cost the lives of many recruits (and a bulging waistline and receding hairline didn't do him any favors...), and KnightInSourArmor in ''The Undiscovered Country'' and ''Star Trek 2009''.
* BadassNormal: Kirk is a good tactician who leagues of more powerful aliens respect, whose exploits include beating a bio-engineered superman with his bare fists. Did we mention he's a non-powered human?
* BeamMeUpScotty: The TropeNamer, by omission. No, he never said it. (No, not even in ''WesternAnimation/StarTrekTheAnimatedSeries'' - there he says "Beam ''us'' up, Scotty".) The closest he comes is in ''The Voyage Home'' where he says, "Scotty, beam me up."
* BoldExplorer: Though it was just his job, Kirk's boldness makes him an iconic version of the trope.
* BoldlyComing: Although not ''nearly'' [[NeverLiveItDown as much as his reputation suggests]].
* [[BunnyEarsLawyer Bunny-Ears Lawyer]]: The things Kirk got away with...
* TheCaptain: The TropeMaker.
* CompanionCube: Kirk's strongest love in the TV series is for the ''Enterprise'' herself; this may vary between HappilyMarried and TheMasochismTango. The movies have this become overshadowed by loyalty to his TrueCompanions, culminating with his [[TearJerker painful]] decision to self-destruct the original 1701 in ''Film/{{Star Trek III|The Search for Spock}}''.
** A RunningGag in the movies is Kirk's loving relationship with his chair. He glumly sits in the rickety Captain's chair aboard the ''Enterprise-A'', declaring that it's just not the same. ''[[Film/StarTrekGenerations Generations]]'' repeated this gag onboard the ''Enterprise-B'', this time complete with MaleGaze.
* TheChainsOfCommanding: Often has to choose between the GirlOfTheWeek and his duty and otherwise gets caught between TheSpock and TheMcCoy (i.e. logic vs emotion) a lot.
* TheCharmer: Kirk is quite the ladies' man.
* ChivalrousPervert: May very well be the anti-[[Film/JamesBond Bond]]. Except for a very few times where he used his charm to further a greater purpose, Kirk almost always developed sincere feelings for the GirlOfTheWeek, and was just as often [[{{Wangst}} badly hurt]] when they were [[PutOnABus separated]] or [[CartwrightCurse she met with an unfortunate end]].
* DidYouJustPunchOutCthulhu: A specialty of Kirk's.
* {{Determinator}}: When Kirk makes up his mind to do something -- especially if the lives of his crew are at stake -- no force in the universe can keep him down.
-->[[Film/StarTrekIITheWrathOfKhan "I don't believe in the no-win scenario."]]
* [[spoiler:DroppedABridgeOnHim:]] His [[spoiler:death in ''Star Trek: Generations'']] is the TropeNamer.
* EmbarrassingMiddleName: [[spoiler:Tiberius]]
* EthicalSlut: Although he romances many women, he's not a cad or a pervert.
* FarmBoy: Kirk was born and raised on a farm in Iowa.
* AFatherToHisMen
* FormerTeenRebel: [[InvertedTrope Inverted]]. Unlike [[Film/StarTrek his alternate counterpart]], Cadet Kirk was something of a humorless swot as an underclassman, only later developing into the MilitaryMaverick we see in the series.
* FourStarBadass: In the movies. And everyone knows it. Uhura is GenreSavvy, she is.
** [[spoiler:Until he gets demoted at the end of ''Film/{{Star Trek IV|The Voyage Home}}''.]]
* FourTemperamentEnsemble: The Choleric.
* FreudianTrio: The Ego.
* GunboatDiplomacy: One of his favorite diplomatic techniques seems to be threatening to blow up a planet that doesn't do what he wants. Somehow he gets away with this. ''He's Kirk.''
** He only actually uses a threat to blow up a planet as part of diplomatic negotiations once -- but on the other hand his other diplomatic successes include one use of orbital bombardment (with ship phasers set on stun).
* TheHero: Clearly the protagonist of the show. (And the cause of some offscreen drama.)
* HeroicWillpower: In "Dagger of the Mind", one of the bad guys notes that he hasn't given in when subjected to a force that reduced one of their scientists to screaming.
* HeterosexualLifePartners: With Spock.
* HollywoodMidLifeCrisis: In most of the films he suffers from a bad case. Starting with ''Film/StarTrekTheMotionPicture'', in which he struggles with the question of whether he is too young to be an Admiral or too old to be TheCaptain. This leads him to take back command of the ''Enterprise'' as soon as a major threat to Earth is spotted, shamelessly ousting its current (younger) Captain. Subsequent films would have him agonizing, sometimes to the point of {{Wangst}}, over his age, career, life in general and missed opportunities. Notably, he is the only character who seems to suffer from this, to the occasional frustration of Bones and Spock.
* HonorBeforeReason: In "Arena" and "Spectre of the Gun."
* ICanStillFight: Kirk doesn't like being shut up in medbay at all, much to [=McCoy's=] consternation.
* ImprobableAge: Minor example in-universe. [[AllThereInTheManual Background material]] states that, at 30-ish, he is the youngest man yet to command a first-rate Starfleet ship.
* ImprobableWeaponUser: In hand-to-hand combat, he will sometimes grab whatever object is nearby, regardless of what it is. Twice, he has used ''pillows''.
* InsaneAdmiral: Drifts perilously close to this early in ''Film/StarTrekTheMotionPicture'', especially when butting heads with the ''Enterprise's'' new Captain. He gets over it to some extent. But his later actions lead to a "demotion" that puts him back in the Captain's chair, which is exactly where he wants to be and resolves the problem.
* TheKirk: The TropeNamer.
* [[spoiler:KilledOffForReal]]: In ''Film/StarTrekGenerations''. [[spoiler:Let's just say they... DroppedABridgeOnHim.]]
** [[spoiler:And then revived in a Star Trek novel written by...William Shatner!]]
* LargeHam: He's played by WilliamShatner, after all.
* LegendaryInTheSequel: Kirk is depicted as ''the'' Captain, against which all of his 24th-century successors are judged.
* LivingLegend: Even though the original series depicts his first command, it's clear that he's already becoming one of these. The movies take this trope and run with it.
* MarriedToTheJob: His commitment to the Enterprise is so overpowering he doesn't even need an antidote to a love potion.
* MrFanservice: That uniform shirt of his will tear open at the touch of a twig. This was not actually intentional; it's just that the tailoring budget for the original show was less than impressive.
* TheNotLoveInterest: Spock seems comfortable being physically close to Kirk or [[HeldGaze locking gazes]] with him. Edith Keeler said that Spock belonged "at his side, as if you've always been there and always will." But his established romances have always been with females, and at one point he invited Kirk to his wedding.
* NotSoDifferent: From the Romulan Commander in "[[Recap/StarTrekS1E14BalanceOfTerror Balance of Terror]]".
* OfficerAndAGentleman: In addition to judo-throwing aliens and romancing [[GreenSkinnedSpaceBabe Green Skinned Space Babes]], he finds time to be well-versed in classical literature and offer aid to space-borne refugees.
* PapaWolf: Hurting his people causes him much {{Angst}}. And more anger. He's no slouch around real children either.
* ScrewTheRulesImDoingWhatsRight: Kirk does this quite a bit. Hell, if he were anyone else other than ''James T. Kirk'', he'd have been [[UltimateJobSecurity toast]] long ago.
* ShirtlessScene: It's not quite to the level of WalkingShirtlessScene, but Kirk appears shirtless a lot in the original TV show. Mostly famously, it's caused by ClothingDamage during action sequences, but he also tends to just lounge around his quarters without a shirt and such.
* SmartPeoplePlayChess: Spock's opponent of choice in chess games.
* SuddenNameChange: In the [[Recap/StarTrekS1E3WhereNoManHasGoneBefore second pilot]] episode crewman Mitchell, possessed of near-omnipotent alien powers, fights Kirk and creates an open grave with a tombstone reading "James '''R.''' Kirk". This would normally be a minor matter but given how many times Kirk later introduces himself as "James '''T.''' Kirk" it's actually quite jarring.
* TalkingTheMonsterToDeath: Far more often than he gets credit for these days.
* UltimateJobSecurity: Later crews even lampshade that Kirk shouldn't have been able to get away with so much.
* VerbalTic: His peculiar speaking style is perhaps the most famous (and certainly the most frequently-parodied) thing about him. A combination of GratuitousIambicPentameter and PunctuatedForEmphasis, along with inappropriately-placed pauses, which are almost always followed by delivering the rest of his line in rapid-fire fashion.

[[folder:Commander Spock (LeonardNimoy)]]
-> "''Fascinating is a word I use for the unexpected. In this case, I should think 'interesting' would suffice.''"
--> Spock, "The Squire of Gothos"

Kirk's NumberOne and science officer. Spock was half-Human, half-Vulcan, and chose to completely embrace the latter aspect of his heritage. This caused him to clash frequently with Dr. [[TheMcCoy McCoy]]. Spock was supremely analytical and would describe many things as "[[CatchPhrase fascinating]];" he was the go-to man for unusual solutions... or ruthlessly pragmatic ones. He would, occasionally, let slip his more human feelings, but regarded any comparison with humanity to be insulting during the show's run.

Despite the stark contrast in their personalities, Spock and Jim were very good friends (so much so that they inspired SlashFic in [[OlderThanTheyThink 60's and 70's fanzines]]). The character became so iconic that Nimoy put out an autobiography titled "I Am Not Spock," although he later embraced the fanbase. He has reprised the character in ''Series/StarTrekTheNextGeneration'' and the 2009 ''Film/StarTrek'' movie.
* AmbiguouslyJewish: Many fans think that Spock is Jewish on his human mother's side as Creator/LeonardNimoy is Jewish, not to mention that Creator/WinonaRyder (who played Spock's mom Amanda Grayson in the 2009 reboot) is Jewish as well. On a related note, Nimoy adapted the famous Vulcan hand salute from Jewish religious tradition.
* ArrangedMarriage: Betrothed by his family as a child. His intended bride has other ideas, and doesn't mind sacrificing Kirk for them...
* [[spoiler:BackFromTheDead]]: In the [[Film/StarTrekIIITheSearchForSpock third movie]].
* {{Badass}}
** BadassBookworm: He can (and does) use his vast knowledge in conjunction with fighting whatever enemy they're facing.
** BadassGrandpa: Moreso in the movies.
* BeamMeUpScotty: He never said "It's life, Jim, but not as we know it"; that's from ''Star Trekkin'''. The closest he ever came in canon was the episode "The Devil in the Dark":
-->'''Spock:''' Within range of our sensors, '''there is no life''', other than the accountable human residents of this colony beneath the surface. '''At least, no life as we know it'''.
* BewareTheNiceOnes: A vegetarian and a TechnicalPacifist, but if you ever remove his emotional control or threaten [[TheNotLoveInterest Kirk]], you're in trouble.
* BizarreAlienBiology: Principally his [[AlienBlood green blood]] and the fact that his heart is where a human's liver would be. The latter enables him to survive being shot in the back with a flintlock rifle in "A Private Little War".
* [[BlueBlood Blue-Green Blood]]: [[ImpliedTrope Not explicitly stated]], but his father is a prestigious Federation Ambassador, and [[GrandeDame T'Pau]], one of the most powerful people on Vulcan, officiates at (what should have been) his marriage. He also notes that the large estate where the ceremony takes place has been in his family for over two thousand years.
* BluntMetaphorsTrauma
* BoomerangBigot: Is half-human, but most of the time solely embraces his Vulcan heritage and is scornful of human ways. This was later explained in {{backstory}} due to his rocky relationship with his father and the FantasticRacism he experienced whilst growing up on Vulcan. He mellowed in his later years.
* [[ButNotTooForeign But Not Too Alien]]: He's half-human; while he usually acts fully Vulcan, his human side surfaces fairly often.
* CaptainErsatz: Spock's personality is an exaggeration of Roddenberry's former boss, LAPD Chief William H. Parker.
* CatchPhrase: "Fascinating", accompanied, of course, by...
** FascinatingEyebrow
* TheComicallySerious: Given his lack of emotions and [[LiteralMinded frequent]] [[BluntMetaphorsTrauma misunderstandings]], he's usually assigned with some funny scenes.
* TheCreon: Spock is this, almost to the letter. He only takes command of the Enterprise once Kirk has been KickedUpstairs, and gives it back almost immediately when the opportunity arises. And, being already a captain and in command of the Enterprise, Spock never gets his own commission: he keeps his position as first-officer under Kirk for several more movies! Surprisingly, Spock's mirror-universe counterpart is exactly the same on this - and even explicitly states his reasons (in "Mirror Mirror"). [[note]]Namely that he preferred being "a lesser target" for {{Klingon Promotion}}s.[[/note]]
** SubordinateExcuse: Spock's friendship with Kirk may be an explanation for why Spock continues to serve as Kirk's first officer even after he is promoted to Captain himself.
* DeadpanSnarker: Apparently there is nothing illogical about scathing sarcasm. Despite his claims to be above human pettiness, Spock frequently makes sarcastic quips or the "''really?''" face.
* [[DefrostingIceQueen Defrosting Ice King]]: Even with the crew's massive PowerOfFriendship skills, it took Spock years to decide that emotions were not such a bad thing.
* {{Deuteragonist}}: A natural result of his [[EnsembleDarkhorse popularity with fans]]; originally, the show was intended as having plots about "Kirk and X", where "X" would be a different character each week; many of the early first season episodes follow this formula, but gradually "X = Spock" became more common.
* EscapistCharacter: To socially awkward Trekkies. Spock is smart, respected, physically powerful, long-lived, and blessed with loving and devoted friends even though he himself has never learned human social skills. The fact that he was picked on as a child on Vulcan as a "Half-Breed" further cements how much you can identify with him.
* FantasticRacism: A victim of this {{trope}}, as well as a mild subscriber (towards humans).
* ForgetsToEat: Occasionally. While never shown, in "Amok Time", [=McCoy=] uses the fact that Spock hasn't eaten for three days in an attempt to convince Kirk that something is wrong, and Kirk dismisses it as simply being Spock in one of his contemplative phases. Another example is "The Paradise Syndrome", where Spock hardly eats for weeks while studying the obelisk.
* FourTemperamentEnsemble: The Melancholic.
* FreudianTrio: The Superego.
* FriendlessBackground: As demonstrated in [[WesternAnimation/StarTrekTheAnimatedSeries the animated series]], Spock never had any friends growing up because of the HalfBreedDiscrimination on his planet.
* GoodIsNotNice: He's rude, tactless and completely cold-hearted, but he always has the best interests of the ship and crew in mind.
* HalfHumanHybrid: He completely embraces the non-human side of himself. As a child, the local children rejected him for his human heritage.
* HeterosexualLifePartners: With Kirk.
* HiddenHeartOfGold: He makes a point of keeping it hidden and gets very embarrassed when it's uncovered.
* HumanMomNonHumanDad: His mother is a human named Amanda. His dad is Sarek.
* InsultBackfire:
-->'''[=McCoy=]:''' Spock, you are the most cold-blooded man I've ever known.
-->'''Spock:''' Why, thank you, Doctor.
* LivingLegend: [[InvokedTrope Invoked]] in "Amok Time" when T'Pring informs Spock that he has become a legend among the Vulcans, and that she has no desire to become the consort of a legend. His status only grows through his efforts to achieve a lasting peace with the Klingons, and his subsequent ambassadorial career. In the later shows, he is depicted as LegendaryInTheSequel [[spoiler:even though he is technically still alive throughout the franchise (including into the reboot continuity)]].
* LudicrousPrecision: Will often give time estimates down to the second and can complete large exponential multiplications in his head.
* MinoredInAssKicking: Especially when you realize that Vulcans are extremely strong compared to humans.
* TheNotLoveInterest: Kirk is very comfortable being in close physical proximity to Spock and sharing a HeldGaze with him. In ''Film/StarTrekIIITheSearchForSpock'', he refers to him as his "nobler half", and, as much as he loves the ''Enterprise'', he would always rather lose the command than lose Spock. However, he is [[TheCasanova very popular with the feminine sex]], so their relationship is platonic.
* NumberTwo: This and the science officer.
* OnlyOneName: Spock's full name is never officially revealed. Depending on the [[AllThereInTheManual source material]], it is either ''S'chn T'gai Spock'' or simply [[TheUnpronouncable unpronouncable]].
* ParentheticalSwearing: Often when delivering a StealthInsult.
* RedOniBlueOni: The blue to [=McCoy=]'s red
* [[RubberForeheadAliens Rubber Ear Alien]]
* SarcasticDevotee: There are few people who are as loyal to Kirk as Spock is, but that doesn't protect the captain from his snarky wit.
* SmartPeoplePlayChess: ''Three-dimensional'' chess.
* TheSpock: The TropeNamer.
* TheStoic
** NotSoStoic:
*** Although in most of the cases when he show emotions it is usually a result of either [[OutOfCharacterAlert mind control, drugs, or side effects from strange phenomenons]]. But he does have some moments where it genuinely comes from himself, most notably the scene from "Amok Time" where he realizes that Kirk wasn't KilledOffForReal, and greets him with a loud and happy "JIM!"
*** He gets a moment in ''Film/StarTrekVITheUndiscoveredCountry'' when Valeris, his protege, is revealed to be the conspiracy's mole on board the ''Enterprise''. She has a phaser drawn on him, and when she refuses to shoot, he slaps it out of her hand with a clear look of anger on his face. Then, in one of the most {{Squick}}-filled scenes of the entire franchise, he proceeds to MindRape her right on the bridge in front of God and everybody. Pushing this man's BerserkButton is nigh-impossible, but if you do, you're in for a world of shit.
* StrawVulcan: At times.
* SugarAndIcePersonality
* SuperStrength: The Vulcan heritage makes Spock three times stronger than a human.
* TokenNonhuman: He's the only regular in the cast who is visibly nonhuman. (The [[WesternAnimation/StarTrekTheAnimatedSeries animated series]] averted this since there was no make-up budget in the way.)
* VerbalTic: His endless permutations of the word "logic", and his unfailing ability to fit them into sentences, border on this.
* VitriolicBestBuds: With [=McCoy=]. That Spock considers him a close friend is established beyond all doubt in "Amok Time", when he invites him (along with Kirk) down to Vulcan to witness a ceremony which is deeply private and personal to Vulcans.
* TheWorfEffect: Any enemy that can hold Spock in a fight is deemed a formidable adversary.

[[folder:Doctor (Lieutenant Commander) Leonard "Bones" [=McCoy=] (DeForestKelley)]]
-> "''"I signed aboard this ship to practice medicine, not to have my atoms scattered back and forth across space by this gadget.''"
-> [=McCoy=], "Space Seed"

The third member of the PowerTrio. Nicknamed "Bones" by Kirk, [=McCoy=] was a highly competent doctor who wasn't entirely comfortable with deep space and always brought a more emotional and moral component to the philosophical debates. He clashed frequently, and colorfully, with Spock, as he found Spock's rejection of emotion to be absurd. However, the two men did genuinely respect each other. Despite his "down-home country doctor" routine, [=McCoy=] could and did carry moments of {{Badass}}ery frequently.

Despite a very wild appearance in the first one, [=McCoy=] remained largely the same in the movies: a cantankerous but kind-hearted medical professional.
* ActorSharedBackground: Both [=DeForest=] Kelley and Bones are natives of Georgia and have Irish sounding names.
* BadassPacifist: He's a doctor and takes that very seriously. However, that doesn't stop him from doing extremely dangerous things to save lives. Circumstances sometimes force him to show that he is a decent shot and somewhat competent brawler, but he is hardly a willing CombatMedic, both disgust with violence and unashamed fear always extremely apparent on his face. Possibly best seen in "Space Seed," where he doesn't flinch at Khan holding a knife to his throat and even gives advice on the best way to kill him from their current position.
* CatchPhrase: Two:
** "[[HesDeadJim He's dead, Jim.]]"
** "[[ImADoctorNotAPlaceholder I'm a doctor, not an X]]!"
* ChivalrousPervert: Is notable for being more open about his skirt-chasing than Kirk... [[CasanovaWannabe and less successful at it]].
* CoolOldGuy: Subverted, he is in middle age.
* CombatPragmatist: [=McCoy=] is especially fond of hitting an enemy (or even a reluctant friend) with a hypospray to render them unconscious/simulate a disease/etc. in order to get the upper hand. In "Amok Time" he does this ''[[HeroicBystander without being an actual participant in the fight]]'' in order to save Kirk's life and Spock's career.
* DeadpanSnarker: His specialty.
** ''This Side of Paradise'' has a couple gems.
-->''(After Kirk informs a man that he will be taken from his planet with or without his cooperation)'' "Should I get the butterfly net?"
* {{Determinator}}: Where Scotty wouldn't roll over and die on keeping the ship together, this man refuses to just let his patients die if he has any means to save them.
* DrJerk: While he's a JerkWithAHeartOfGold, his [[ImADoctorNotAPlaceholder cantankerous reminders of his actual occupation]] qualify for this trope. In "Friday's Child", he persuades an obstinate, haughty patient to let him ease her pain... by slapping her in the face. Justified in that the woman in question was a Capellan--a ProudWarriorRace that regards a show of force as a sign of respect and honesty--and that [=McCoy=] was an expert on this species, having been part of the first contact team that discovered them years earlier. Given that the woman later gave birth [[MeaningfulName and named the child after McCoy]] it worked as well as intended:
-->'''Kirk:''' Never seen that in a medical book.\\
'''[=McCoy=]:''' It's in mine from now on.
** Especially in "This Side of Paradise," when he's under the influence of AppliedPhlebotinum that makes him more irritable.
-->'''Sandoval:''' We don't need you, not as a doctor.\\
'''Bones:''' Oh no? Would you like to see just how fast I can put you in a hospital?
* FakeAmerican: In the reboot.
* FirstNameBasis: With Kirk.
** Averted in Kirk's case, as he always refers to him as Bones, never Leonard.
* FourTemperamentEnsemble: The Sanguine.
* FreudianTrio: The Id.
* FrontierDoctor: Dr. [=McCoy=] is perhaps Trek's outstanding example of a [[TheFinalFrontier (Final)]] FrontierDoctor--resourceful in the face of alien ailments, preferring simple homespun methods when possible, but cantankerous, eccentric, and not entirely happy with his lot (he fled to space on the heels of a divorce). ''Franchise/StarTrek'' was pretty much [[WagonTrainToTheStars the original]] SpaceWestern, after all, and actor [=DeForest=] Kelley had an extensive background in westerns.
* GoodIsNotNice: He's not hesitant about expressing his dislike for people or his refusal to suffer fools but he is most often the one who suggests doing the right thing.
* GoodOldWays: He both enforces and subverts this trope. He's rabidly in favor of fighting the dehumanizing effects of too much technology (especially the transporter) in favor of enjoying "the simple things in life", and yet sees "primitive 20th-century medicine" as just above trepanation, leeches, and blood-letting in its barbarity, preferring the "high tech approach" to healing. In general, he embraces the positive, constructive aspects of technological progress rather than the destructive or dehumanizing ones.
* GrumpyBear: [=McCoy=] is constantly grumbling about space travel, supercomputers, Spock, unruly patients, etc etc.
* GrumpyOldMan: He becomes this in the movies.
* TheHeart: He's a deeply ethical man underneath his cantankerous exterior and always brings the moral side to a discussion.
* HesDeadJim: TropeNamer.
* HonorBeforeReason: And ''proud'' of it.
* HospitalHottie
* HypocriticalHeartwarming: [[TheMcCoy McCoy]] is always trying to get an emotional rise out of [[TheSpock Spock]], but in the episode "Plato's Stepchildren," [=McCoy=] jumps to Spock's defense when powerful aliens force him to cry and to laugh. And in other episodes he's usually the first to jump to Spock's defense any time ''anyone'' attacks or insults him, possibly because his issues with Spock are more of a giant angry moral debate while other people tend to be full racism.
* ImADoctorNotAPlaceholder: TropeNamer.
* InnocentBlueEyes: Doctor [=McCoy=] has [=DeForest=] Kelley's bright, shining baby blues. He's probably the kindest, most compassionate character of the entire Trek franchise.
* InSeriesNickname: "Bones" is actually short for "saw-bones", an archaic term for a surgeon. It was originally intended as the nickname of Dr. Boyce from "The Cage", but was never used in that episode, making it available for [=McCoy=].
* JerkWithAHeartOfGold
* KnightInSourArmor: He's grumpy, sarcastic and has little respect for authority (with the exception of Kirk). But when the chips are down, you can always count on him to do the right thing.
* TheMedic: He's even able to treat a silicon-based lifeform.
* TheMcCoy: The TropeNamer.
* MoreHeroThanThou: In "The Empath" when aliens offer Kirk the choice of sacrificing [=McCoy=] or Spock, [=McCoy=] takes out Kirk with drugs. Spock is glad; since this leaves him in command, he can make the sacrifice himself. [=McCoy=] proceeds to drug him as well and sacrifice himself.
* PromotionToOpeningTitles: At the beginning of the second season.
* RedOniBlueOni: The red to Spock's blue.
* ResignationsNotAccepted: At the beginning of [[Film/StarTrekTheMotionPicture the first movie]], has retired to private practice, and is called back into service against his protests on Kirk's request.
* RenaissanceMan
* SarcasticDevotee[=/=]SourSupporter: He will follow Kirk into the pits of Hell and back, but he'll [[GrumpyBear grumble]] about it first.
** Similarly, if Spock is in trouble he'll strive to help him, just don't expect him to hold back on a [[VitriolicBestBuds few jibes]] whilst he does.
* SouthernFriedGenius: One of the most respected doctors in {{the Federation}} -- straight out of Georgia.
* SouthernGentleman
* StrawmanEmotional: At times.
* TallDarkAndSnarky: Not as tall as Spock, but plenty dark-haired and snarky.
* VitriolicBestBuds: With Spock.
* TheWatson: Despite serving on Starfleet's flagship, [=McCoy=] is routinely unfamiliar with various technical aspects of the ship or other technology he encounters. (He is an excellent doctor, however, which makes up for it.)
* WhatCouldHaveBeen: An episode exploring his {{Backstory}} was planned and shelved at least twice. One of the main points (that he joined Starfleet as an established [=MD=] after a nasty divorce) finally saw the light of day in the [[Film/StarTrek 2009 movie]].
** [=McCoy=] was also supposed to have an estranged daughter named Joanna, who would have appeared in - and whose name was the original title of - "The Way to Eden", being one of the hippies who take over the ''Enterprise''. Ultimately, she never appeared in the series, only showing up (possibly non-canonically) in The Animated Series.

[[folder:Lieutenant Commander Montgomery "Scotty" Scott (JamesDoohan)]]
-> "''I cannae change the laws of physics! I've got to have thirty minutes!''"
-> Scotty, "The Naked Time"

Chief Engineer of the ''Enterprise.'' Scotty's most frequent job was to solve a seemingly-impossible crisis with the engine or transporters (or whatever piece of Starfleet technology was making trouble that week), protesting all the way before either hitting on a creative solution or sweating it through. He was also Scottish and had many sterotypical Scottish traits, such as a love of good whisky and namedropping haggis. Though he was sometimes used for comic relief, it's worth noting that Scotty was ''extremely'' {{Badass}} whenever he was the ranking officer on the Bridge and kept it safe from interfering aliens or Starfleet's many half-crazed admirals.

Scotty's role in the films was still the Chief Engineer, but he was relegated to the comic relief role more often. He also appeared in an episode of ''The Next Generation''.
* ActorSharedBackground: James Doohan had a degree in Engineering and even used it to save Gene Roddenberry from danger when they went out boating and ran into trouble. No record exists of him saying that the boat "cannae take much more of this" though.
* {{Badass}}: Any time he gets put in charge of the Bridge.
* BeamMeUpScotty: Scotty is universally remembered as complaining that the engines "cannae take much more ah this, Cap'n", for fear that "she's gonna blow", or some variation thereof. He's also known to protest that "ah doon have th' pow'r, Cap'n!" He never used ''any'' of those phrases on the show; they're cobbled together out of a dozen different lines from different episodes, and have become ubiquitous in parodies ever since.
** He also said "'''''Ah''''' cannae change the laws of physics", and ''not'' "'''''Ye''''' cannae". That's from ''Star Trekkin'''.
*** He didn't say either. He said, exactly, "I can't change the laws of physics. I've got to have thirty minutes!" Most parodies play the accent up far beyond the original.
* ButtMonkey: Sometimes, whenever he was left in charge of the ''Enterprise.''
* CompanionCube: If Kirk saw the ''Enterprise'' as a demanding wife, Scotty saw the ship -- particularly her engines -- as no less than a child ("My bairns! My poor bairns!").
* DangerouslyGenreSavvy: Whenever he was left in command of the ''[[CompanionCube Enterprise]]''. There's "Fool me once, shame on you, fool me twice, shame on me," and of course the time that he receives a suspicious audio message from "Kirk" and the first thing he does is run it through a voice analyzer which proves it wasn't really Kirk. Do not fuck with Scotty.
** "Aye, sir. [[SpySpeak Queen to Queen's level 3.]]"
** The novel ''Kobayashi Maru'' reveals that Scotty's solution to the Kobayashi Maru was to reprogram the simulation to allow him to use a strategy that would never work in reality, which his instructors would immediately realise. After taking note of his ingenuity, they'd proceed to "punish" him by switching him from the command track to engineering... [[AllAccordingToPlan just as Scotty intended]].
* ADayInTheLimelight: "Wolf In The Fold", "The Trouble With Tribbles", "By Any Other Name," and "The Lights of Zetar."
* TheEngineer: His primary duty.
* FakeScot: James Doohan was Canadian.
* FatherNeptune: Though as he is RecycledInSpace perhaps he would be Father Jove or Father Apollo but you get the idea.
* FourTemperamentEnsemble: The Phlegmatic.
* GadgeteerGenius: Can [[MacGyvering MacGyver]] just about anything on his own, but particularly shines teamed with Spock. The two of them could turn the most obscure theory into a way to save the day.
* GeniusBruiser: Pretty handy with both his fists and his mind.
* GreaseMonkey
* MexicansLoveSpeedyGonzales: Scotty is something of a minor national icon in Scotland. There was even something of a scuffle between a few cities to be named his canonical birthplace.
* MrFixit
* UsefulNotes/{{Scotland}}
* ScottyTime: TropeNamer.

[[folder:Lieutenant Nyota Uhura (NichelleNichols)]]
-> '''Uhura:''' Mr. Spock, I haven't done anything like this in years. If it isn't done just right, I could blow the entire communications system. It's very delicate work, sir.
-> '''Spock:''' I can think of no one better equipped to handle it, Miss Uhura. Please, proceed.
-> Uhura and Spock, "Who Mourns for Adonais?"

Uhura was ''Enterprise's'' communications officer and [[WordOfGod according to Gene Roddenberry]] was fourth in line of command behind Mr. Scott (not that this ever got displayed on the series). Unfortunately, her character was vastly underutilized during the series' run, although the times she was allowed to do more than be the ship's phone operator, she was pretty good at whatever she was doing. Her role was somewhat expanded after the first season and she did get to take the Captain's chair in the animated series.

Offscreen, Nichols was subjected to racist harassment and resigned when she learned that the studio executives had been withholding her fan mail. A conversation with Martin Luther King Jr. convinced her to stay: he told her that the idea of a black woman being equal to whites was something vitally important for children to see, as a role model or as an example of what should be. Both Mae Jemison (America's first black female astronaut) and Creator/WhoopiGoldberg have cited her as an influence, along with many others.
* ActionGirl: In "Mirror, Mirror" and "The Gamesters of Triskelion."
* BridgeBunny: To Nichols' frustration. She did have a few episodes where she was on the away team but for the vast majority of the show, she was confined to her station.
* CanonImmigrant: Her first name "Nyota" was used in the non-canon novels for decades before finally being made official. Very early Trek guides suggest that "Penda" was considered a possibility by the fans. Parodied in the 2009 film when Uhura refuses to tell Kirk her first name until the end of the movie.
* TheCastShowoff: NichelleNichols got to show off her singing ability a couple times.
* CatchPhrase: "Hailing frequencies open."
* TheChick
* CommunicationsOfficer: One of the most famous examples.
* ADayInTheLimelight: "Mirror, Mirror" and "The Trouble With Tribbles".
* FakeNationality: Uhura is from the "United States of Africa", but Nichelle Nichols is American (as is Zoe Saldana in the reboot).
* MeaningfulName: "Uhura" is derived from "Uhuru," which means "freedom" (which carried a strong RealitySubtext in the 1960s), while "Nyota" means "star".
* [[MsFanservice Ms. Fanservice]]
* NotEvenBotheringWithTheAccent: She is African and her first language is Swahili, yet she sounds American. [[JustifiedTrope Justified]] in that she is a linguist.
* ShipTease: She shares a kiss with Kirk in "Plato's Stepchildren," although it was under MindControl.
** And Scotty on a few occasions, they even dated for a while in one of the movies.
** Also appears to show an interest in Spock in a few episodes. [[Film/StarTrek Yes, long before the reboot]].
* TwoferTokenMinority

[[folder:Lieutenant Hikaru Sulu (GeorgeTakei)]]
-> "''Maintaining course and speed, Captain''."
-> Sulu, a number of episodes

The helmsman, thankfully living in a time before bridge consoles were MadeOfExplodium. Sulu was an affable and level-headed officer, a staple of bridge drama and away missions. He worked well with other members of a crew and sometimes shared his hobbies: botany, antiquing, and fencing. (Although the last one was not exactly in a clear state of mind.) When Chekhov was added to the crew, they formed a ThoseTwoGuys dynamic.

Although he has a Japanese first name, his surname is deliberately ambiguous; it is the name of a sea that borders several Asian countries. Like Uhura, Sulu was significant for being a non-stereotypical portrayal of an Asian man.
* AbsenteeActor: Missing for much of the second season because GeorgeTakei was filming ''The Green Berets''.
* {{Badass}}: Capable of handing much bigger opponents their asses. In fact, when he comes unhinged during "The Naked Time", he even scares ''Kirk.''
** CulturedBadass: Very knowledgeable in many subjects, such as botany.
** TookALevelInBadass
* BeamMeUpScotty: Don't expect to ever hear Sulu say "''Oh, my''." That's {{George Takei}}'s personal CatchPhrase. Sulu himself was the only regular who lacked a memorable CatchPhrase or VerbalTic, one of the reasons he didn't show up in too many parodies (and when he did, he was usually the StraightMan). More recently, given Takei's predilection for AdamWesting, parodies of Sulu are basically parodies of Takei (including the CampGay antics - see below).
* BrainwashedAndCrazy: Again, "The Naked Time."
* CanonImmigrant: His now-canon first name "Hikaru" was given to him in the non-canon novels by Vonda [=McIntyre=]. Very early Star Trek guides suggest that "Walter" was considered as a possible first name during the show itself, but never officially used.
* ADayInTheLimelight: "The Naked Time" and "Mirror, Mirror".
* EvilIsHammy: Every MirrorUniverse character was hammy, but Takei was a particularly rich, dripping slice.
* FakeNationality: Averted, for the ''only'' time in all series. Sulu is Japanese-American from San Francisco, and so is GeorgeTakei. Played straight in the 2009 {{film}}.[[note]] They were leery of casting an actor of non-Japanese descent until Takei himself assured them that it would be all right, claiming that the character represents all of Asia (note that Sulu is not a Japanese name). This paved the way for Korean-American John Cho to assume the role.[[/note]]
** In some of the non-canon novels, Sulu explains that his background ''is'' mixed, but primarily Filipino and Japanese.
* FanOfThePast: He's a history buff and a competent fencer.
** Overlaps with AcePilot in the movies when--upon a simple inspection of the controls--he flies a 20th century helicopter competently enough to perform cargo-lifting duties.
* FleetingPassionateHobbies: Including fencing ("The Naked Time") and botany ("The Man Trap"). In fact, in "The Naked Time", Kevin Riley {{Lampshades}} it.
* GenerationXerox: In ''[[Film/StarTrekGenerations Generations]]'', we meet his daughter Demora, who is (where else?) at the helm of the ''Enterprise''-B.
* GeniusBruiser: Just happens to be an expert in botany, swordsmanship, French history, and flying ancient aircrafts.
* GoodScarsEvilScars: His MirrorUniverse counterpart has a big nasty scar on his face.
* KatanasAreJustBetter: Averted in "The Naked Time". Sulu was originally supposed to go on his rampage with a samurai sword, but at Takei's request to do something less stereotypical, it was switched to an epee.
** Sadly played straight in the reboot movie - it's not exactly a normal katana, but it seems clearly intended to invoke this trope.
* TheReliableOne: He's quite competent at a variety of tasks, and very level-headed compared to characters like Chekhov or Scotty. He's also fiercely loyal to his crewmates, to the point of disobeying Starfleet orders and potentially causing a serious diplomatic incident just to rescue them.
* ThoseTwoGuys: With Chekhov.
* ShirtlessScene: In "The Naked Time".
* SpiritualSuccessor: Implied to have become Kirk's when Sulu becomes captain of the ''Excelsior''.
* WhyDoYouKeepChangingJobs: Initially the show's creators couldn't make up their mind what to do with Sulu, and he featured prominently as the ship's physicist in the second pilot before becoming the helmsman.
* WordOfGay: {{Inverted}}. After Takei came out of the closet, many people assumed Sulu was also gay. Takei has denied that in interviews, claiming Sulu was/is straight.
** As an interesting coincidence, Sulu is the only one of the six male regulars who never had an on-screen love interest, so there's no "proof" either way (''Mirror'' Sulu, on the other hand, is obviously attracted to women, as Uhura can attest). The nearest he gets is some light flirting with Yeoman Rand during "The Man Trap".
** Sulu has a daughter named Demora Sulu in ''Film/StarTrekGenerations'', which would ''seem'' to confirm it, [[HasTwoDaddies unless...]]
** Non-canon sources variously give Sulu a wife or make Demora the product of a Kirkesque fling.
** Takei has also stated that Gene Roddenberry "knew that I was gay, and it never made a difference to him." This in TheSixties.

[[folder:Ensign Pavel Chekov (WalterKoenig)]]
-> "''Of course, Doctor. The Garden of Eden was just outside Moscow. A very nice place. Must've made Adam and Eve very sad to leave.''"
-> Chekov, "The Apple"

The ship's navigator from season 2 onwards. Chekov had a tendency to refer to GloriousMotherRussia and claim that any human advancement, technological or cultural, originated there. He also had terrible luck and frequently ran foul of whatever physical or psychological menace the ship was facing that week, mainly because WalterKoenig had an excellent capacity for screaming. Aside from that, he and Sulu were good friends and would frequently banter about the action.

Chekov is by far the most junior of the regular bridge officers, but the writers justified his presence by having him act as the relief science officer whenever Spock was busy or incapacitated. In fact, Chekov would often abandon his navigation console in order to take up the science scanner if Spock had to step away - even at warp, or in the middle of a battle. In ''Film/StarTrekIII'', in a nod to this, Chekov identifies himself as the "Acting Science Officer" of the ''Enterprise''.

Chekov was added for a few reasons: to attract younger viewers and give a nod to the Russians in the space race. (Also to fill in some of Sulu's role while Takei was filming ''Film/TheGreenBerets''.)
* AmbiguouslyJewish: An idea with some popularity in the {{fandom}}, partially since [[WalterKoenig Koenig]] (and AntonYelchin, who played Chekov in the [[Film/StarTrek 2009 reboot]]) are Jewish.
* ButtMonkey: Chekov did more screaming-in-pain than the rest of the crew combined. He even got a [[ColdBloodedTorture torture]] scene in the episode "Mirror, Mirror". This was explained as a convenient way to show there was mortal peril. Apparently, Kirk, Spock and [=McCoy=] all being older, dignified men would have made it improper for them to scream, but Chekov is in his early twenties and still very boyish, so it's all right for him. Doesn't make it any easier on the poor guy, though. In a nice inversion, he's the only one who ''doesn't'' get hit with the aging disease in "The Deadly Years". He still ends up getting subjected to a thousand and one medical checks, though.
-->'''Chekov:''' Blood sample, Chekov! Marrow sample, Chekov! Skin sample, Chekov! If – if I live long enough, I'm going to run out of samples!
-->'''Sulu:''' You'll live.
-->'''Chekov:''' Oh yes, I'll live. But I won't enjoy it!
* ChekovsGun: Often seen with Chekov, especially on landing-party duty. Like ChekhovsGun, if it makes an appearance, it will most likely be used by the end of the episode or movie.
* {{Cloudcuckoolander}}: Chekov's constant references to Mother Russia appear to only make sense in his mind.
* CulturalPosturing: What ''didn't'' Mother Russia invent?
* DawsonCasting: Chekov was in his early twenties during the time of the series. Walter Koenig was 31 when he joined the series - in fact he was (and is) ''older'' than George Takei!
* ADayInTheLimelight: "[[AgonyBeam Mirror, Mirror]]", "The Trouble With Tribbles", "The Deadly Years", and "The Way to Eden".
* DeadpanSnarker: Not as much as Bones or even Spock, but he definitely has a smartassed side...as he gets older it gets worse.
* FakeRussian: Played with, as Walter Koenig's parents were Russian immigrants and so Koenig is the right ethnicity (if not the right nationality) to play Chekov.
* TheIntern: Much is made of his relative inexperience and impulsiveness.
* KnowNothingKnowItAll: Chekov both amused and annoyed his crewmates by spouting what he didn't know about Russian history.
* MrFanservice: Really. Brought in specifically to appeal to younger {{Fangirl}}s complete with hair straight out of Music/TheMonkees.
* TheNavigator
* PluckyComicRelief: Particularly as the {{film}}s progressed.
* RunningGag: "It vas inwented in Russia."
* RussianGuySuffersMost: Oh, yeah.
* TheScream: WalterKoenig had a good one, which is why it's Chekov who always gets stuffed into the [[AgonyBeam agony booth]], shot, driven insane, tortured by Klingons, implanted with parasitic worms...
** Koenig lampshaded this by jokingly calling the second movie in the series "Star Trek II: Chekov Screams Again"
* SixthRanger: Subverted. Chekov didn't ''appear'' on the show until Season 2, but apparently served on the ''[[CompanionCube Enterprise]]'' long before he appeared, because in [[Film/StarTrekIITheWrathOfKhan the second movie]], [[LargeHam Khan]] recognizes Chekov, apparently having met him in the Season 1 episode "Space Seed".
** Walter Koenig's explanation for how they met is that Chekov actually was serving aboard the ''Enterprise'' but was on duty during the night shift, and he and Khan met off-screen. The circumstances of their meeting were thus: Chekov was using the bathroom and he was taking an inordinately long time, and Khan approaches that very same bathroom, needing to use it. Finding it occupied, he soon loses his patience and pounds on the door. When Chekov finally emerges, Khan grabs him and fixes him with a DeathGlare, and says "I will ''never'' forget your face!"
*** This is further compounded by the fact that he expended ''all'' the toilet paper.
* ThoseTwoGuys: With Sulu.
* WhatCouldHaveBeen: Was originally planned to be a British character. Supposedly Roddenberry changed it after having a letter from the Soviet Union which praised the show's message but [[ColdWar criticized the lack of a prominent Russian character]], although this may be an apocryphal story as American programming wasn't airing in the U.S.S.R. at that time.

[[folder:Head Nurse Christine Chapel (Creator/MajelBarrett)]]
* ADayInTheLimelight: "The Naked Time", "What Are Little Girls Made Of?", "Amok Time", and "Plato's Stepchildren".
* DeadpanSnarker: "You know, self-pity is a terrible first course. Why don't you try the soup?"
* HospitalHottie
* [[NoNameGiven No Rank Given]]: In the series, Chapel was always addressed by her position rather than her rank. She is formally promoted to Lieutenant [[WesternAnimation/StarTrekTheAnimatedSeries later on in the five-year mission]], and by the time of the [[Film/StarTrekTheMotionPicture first movie]], has an [=MD=] under her belt, and is prepared to assume the role of Chief Medical Officer. We can therefore assume that, especially given her position as ''Head'' Nurse, she was a junior officer (probably a mustanged Ensign, given her backstory).
* RealLifeWritesThePlot: Majel Barrett was the girlfriend and eventual wife of Gene Roddenberry, which may explain why we saw Nurse Chapel so much. In part her role was also expanded in the latter half of the first season (after only sporadically appearing in the early episodes) due to Grace Lee Whitney leaving, and Nichelle Nichols also threatening to quit, which would have left the show without any recurring female characters.
* SingleWomanSeeksGoodMan: Roger Korby, her fiancé, was a man to whom "life was sacred" by her own description. Given that her reasons for crushing on Spock included his honesty, it seems this applies across the board for Chapel.

[[folder:Yeoman Janice Rand (Grace Lee Whitney)]]
* BeehiveHairdo
* BridgeBunny: The TropeCodifier.
* ChuckCunninghamSyndrome: Vanished halfway through the first season due to [[RealLifeWritesThePlot off-screen issues]].
* TheBusCameBack: She became the Transporter Chief in the first film, had a cameo in Star Trek 3, and was Captain Sulu's communications officer in Star Trek 6. She also appears in a flashback episode of Voyager set during her time serving on board Sulu's ship.
* DistressedDamsel
* HelloNurse
* HypercompetentSidekick: Implied--there are several references to her ability to keep Kirk from being swamped in paperwork, and one to improvising with a ''phaser'' when the food systems won't provide hot coffee.
* [[MsFanservice Ms. Fanservice]]: The original media package described her as having "a strip queen's figure that a uniform can't hide." Not that those uniforms hide much, but whatever.
* SatelliteCharacter: With the exception of "The Man Trap", where she hangs around with Sulu for a large part of the episode, and "Charlie X", where she's the unwanted focus of Charlie's attraction until he (temporarily) zaps her out of existence, she has no significant interaction with any character other than Kirk.
* UnresolvedSexualTension: With Kirk.

[[folder:Lieutenant Kyle (John Winston)]]
* TheCameo: He's a bridge officer on the ''Reliant'' in ''Film/StarTrekIITheWrathOfKhan''.
* MauveShirt: Because he was the only recurring {{redshirt}} not played by an extra, he usually had much more dialogue than other {{redshirt}}s, a consistent name and position on the ship, and was allowed to play an active role in the {{plot}} (see "The Doomsday Machine" or "Mirror, Mirror" for examples).
* OnlyOneName
* TeleportersAndTransporters: Contrary to [[CommonKnowledge popular belief]], he was the Transporter Chief, not Scotty. Like other {{redshirt}}s, he was occasionally seen on the bridge, though usually he was explicitly pinch-hitting for someone else (as in "Who Mourns For Adonais?" when Spock has taken command and Chekov is in the landing party, and Kyle mans the science station).
* WhatHappenedToTheMouse: We never see him on-screen again after being marooned on Ceti Alpha V, which caused much speculation about his fate. The non-canon novels and comics established that he survived his unwanted shore leave on the planet, and eventually ended up on the ''Enterprise''-A.

[[folder:Kevin Thomas Riley (Bruce Hyde)]]
* AscendedExtra: Actor Bruce Hyde was cast as a crewman with a significant part in "The Conscience of the King" without anyone realizing he had also played ''uber''-[[{{Oireland}} Irishman]] Riley in "The Naked Time". When [[HeyItsThatGuy the producers finally realized this]], the script was hastily re-written so that Hyde played the same character in both episodes. (The same thing happened with actress [[http://en.memory-alpha.org/wiki/Barbara_Baldavin Barbara Baldavin]], who appeared three times as Angela Martine but is accidentally addressed by other names more than once due to rewrites; figuring out who she really is almost approaches ContinuitySnarl levels.)
* DreadfulMusician: "[[MostAnnoyingSound Iiiiii'll taaaaake you hooome again, Kathleeeeeen....]]"
* {{Oireland}}: Got his "Irish" up when under the influence of the mind virus in "The Naked Time."
* RealLifeWritesThePlot: The reason Riley never returned after "The Conscience of the King", despite being very popular with fans, was that the actor left to become a hippie. Yes, really. Remember, this ''was'' 1967.

[[folder:Ambassador Sarek (Mark Lenard)]]

Father of Spock. A distinguished Vulcan Diplomat, he and Spock were not on speaking terms for some time prior to the former's first appearance in "Journey to Babel" (to the point where Spock never even mentioned to Kirk or Bones that they were related). Sarek had wanted his son to follow him in his footsteps by attending the Vulcan Science Academy, but instead, Spock chose to join Starfleet.

* {{Ambadassador}}: He's proficient in Vulcan martial arts. Spock points out that he could be a plausible suspect in the Tellarite ambassador's murder since Sarek knows the technique that killed him.
* BlueBlood: Or at least comes from good family, in so far as Vulcans count such things, and behaves in a courtly manner.
* CulturedBadass
* GentlemanAndAScholar: A cut line indicated that Sarek was an astrophysicist before he turned to politics.
* HappilyMarried: Though Sarek and his human wife, Amanda, have their differences (as seen in "Journey to Babel"), and though he's culturally inhibited from expressing his emotions, it's clear the couple love each other very much.
* HeyItsThatGuy: In addition to Sarek, Lenard also played the Romulan commander in "Balance of Terror" and a Klingon captain in the first movie. He is the only actor to portray representatives of all three major galactic powers in the TOS continuity.
* JerkassFacade / JerkWithAHeartOfGold
* [[spoiler:KilledOffForReal: Died in the ''Series/StarTrekTheNextGeneration'' episode [[Recap/StarTrekTheNextGenerationS5E7Unification1 "Unification I"]].]]
* NotSoStoic: With a side order of OOCIsSeriousBusiness. In ''[[Film/StarTrekIIITheSearchForSpock Star Trek III]]'', he's visibly angry when he confronts Kirk about the latter's supposed failure to return Spock's ''katra'' to Vulcan. This only escalates when he figures out Kirk has no idea what the hell he's talking about.
* ThePatriarch
* ReasonableAuthorityFigure
* SoProudOfYou: He admits this to Spock in ''[[Film/StarTrekIVTheVoyageHome Star Trek IV]]'', and in TNG's "Unification: Part II", Spock learns from mind-melding with Picard that he was even ''prouder'', which almost moves him to tears.
* WellDoneSonGuy

[[folder:Harcourt Fenton "Harry" Mudd (Roger C. Carmel)]]
* AffablyEvil: He's a shameless crook and totally unrepentant scam artist, but he's friendly, cheerful, easy-going and surprisingly likeable, so long as you remember never to trust him with anything -- especially anything worth money.
* TheAggressiveDrugDealer: "Mudd's Women".
* CarpetOfVirility
* CharacterOutlivesActor[=/=]WhatCouldHaveBeen: He was slated to make an appearance in ''Next Generation'', but Roger C. Carmel died before that could happen.
* ConMan: His first appearance is based on his scam to marry gorgeous women [[spoiler: secretly modified with drugs to be super-beautiful]] to lonely, wealthy space-workers for a huge payout. In ''WesternAnimation/StarTrekTheAnimatedSeries'', it's mentioned he once tricked an alien species by selling them the Starfleet Academy building.
* CoolAndUnusualPunishment: visited on him by Kirk at the end of "I, Mudd."
* FullNameUltimatum:
---->'''Stella''': Harcourt! Harcourt Fenton Mudd!...
---->'''Mudd:''': [[PhraseCatcher Shut UP, Stella!]]
* HenpeckedHusband: It turns out in "I, Mudd" that he had a harridan of a wife named Stella; part of the reason he became a crook was to run away from her to the ends of the galaxy.
* HoistByHisOwnPetard: By the Stella androids at the end of "I, Mudd".
* HonestJohnsDealership: The first storyline involving him is his plan to sell brides to lonely space-miners ([[spoiler: after giving them illegal "Venus Drugs" to make them super-beautiful]]). He'd also been convicted as a smuggler prior to his first appearance.
* LoveableRogue: He's a money-grubber and irresponsible, but he's affable and rarely trying to commit "truly evil" crimes.
* {{Recurrer}}: He holds the distinction of being the ''only'' non-Starfleet character in the entire series to appear in more than one episode.
* {{Trickster}}: He tries to be one, but he... doesn't really succeed at it. At least, not when he crosses Kirk's path.

[[folder:Khan Noonien Singh (Ricardo Montalban)]]
->''"Social occasions are only warfare concealed."''

A 20th century genetically-engineered tyrant who ruled a quarter of the world in the 1990s. As his fellow "supermen" (or augments) were overthrown, Khan and roughly 80 of his followers launched themselves into space in cryogenic sleep before being found by Kirk. With his weakness being his ambition, Khan then tried to seize control of the ''Enterprise'', but failed. Kirk then exiled Khan and his followers to a remote planet where they would build a new society. Unfortunately, not long afterwards, the planet suffered a catastrophic ecological disaster and being completely forgotten by Kirk, Khan grew full of vengeance at the man who cast judgement on him...
* AffablyEvil: In his first apperence, Khan's pretty charming, polite and a bit of rogue, [[NotSoDifferent just like Kirk.]] However, come ''[[Film/StarTrekIITheWrathOfKhan Wrath of Khan]]'' and Khan is just losing it.
* AlasPoorVillain
* AmbiguouslyBrown: He's a genetically-augmented human from some point in the late 20th century. Most sources cite him having Indian heritage.
* ArchEnemy: More than a hundred years later, Spock would credit him as being "the most dangerous adversary the Enterprise ever faced."
* BeenThereShapedHistory: Given "Space Seed" states Khan lived in the late 20th century and "it's 2001 and Khan wasn't on the cover of ''People'' magazine", two novels titled ''The Rise and Fall of Khan Noonien Singh'' tries to explain that the Eugenic Wars was some sort of Secret History. Among Khan's achievements are fighting the USSR alongsite Afghanistan, causing a plane crash that killed the leader of the Pakistan's military government, and opening a hole in the ozone layer. (and in a kind of ActorAllusion, his hideout is [[FantasyIsland an island in the French Polynesia]])
** A tie-in comic to ''Film/StarTrekIntoDarkness'' addresses Star Trek's AlternateHistory directly, starting with Khan nuking Washington D.C. in ''1992''.
* BreadAndCircuses: His ruling style back when he was a dictator over a fourth of Earth, at least compared to his competitors, which was enough to give him a legacy as "the best of tyrants". Notably, there were no massacres under his rule, and he didn't involve himself in the Eugenics Wars until after his territory was attacked. On the other hand, the people under his rule were reduced to subjects with few freedoms.
* BreakoutVillain: Originally just a VillainOfTheWeek. Ever since the movie, arguably the most highly-regarded villain in the entire franchise.
* TheChessmaster
* ClassicVillain: Representing a nice combo Pride and ''Wrath''.
* EvilOverlord: Back in the day, anyway.
* FakeNationality: Played by Mexican actor Ricardo Montalban in probably [[BlackVikings the most blatant example]] of this trope in the series.
* LargeHam
* LastBreathBullet
* NoShirtLongJacket: In the movie (though the jacket is quite damaged), to show off Montalban's great shape.
* {{Pride}}: Oodles of it.
* {{Revenge}}
** RevengeBeforeReason
** RevengeMyopia: He ignores Chekov's observation that he attacked Kirk after the latter had taken in him and his crew.
** RoaringRampageOfRevenge
* RuleOfSymbolism: Much of the conflict between Kirk and Khan plays out like Literature/ParadiseLost, with Kirk as God and Khan as Lucifer. Khan even lampshades this in "Space Seed."
* SealedEvilInACan: He and his cryogenically frozen followers, in the episode "[[Recap/StarTrekS1E22SpaceSeed Space Seed]]". And ''again'' in ''Film/StarTrekIITheWrathOfKhan'', when he's abandoned on Ceti Alpha V (which the crew of the ''Reliant'' mistake for Ceti Alpha VI after a natural disaster alters its orbit and destroys its environment).
* SocialDarwinist: Full stop.
* TakingYouWithMe
* {{Ubermensch}}
* VisionaryVillain: Justifies his quest for WorldDomination as an attempt to unify humanity during a time of war.
* WickedCultured: His FamousLastWords come from ''MobyDick'', he mentions ''ParadiseLost'' before Kirk exiles him, and the Botany Bay appears to have other classic books.
** Part of his obsession with ''Literature/MobyDick'' in particular seem to be because it seems that Khan was stuck on Ceti Alpha V with only a handful of books to read, leading him to read them over and over again.
* WorthyOpponent

[[folder:Commander Kor (John Colicos)]]

The main antagonist of "Errand of Mercy" and Kirk's first Klingon opponent. ''Technically'' he isn't ''Star Trek'''s [[MonsterProgenitor first Klingon]] since several troopers are seen before him but he is the primary Klingon in the episode which introduces the race. He returned in one episode of ''[[WesternAnimation/StarTrekTheAnimatedSeries The Animated Series]]'', three episodes of ''[[Series/StarTrekDeepSpaceNine Deep Space Nine]]'' (undergoing a HeelFaceTurn with the rest of the Klingons) and more [[StarTrekExpandedUniverse novels and comics]] than you can shake a stick at.

* AffablyEvil: Despite intending to execute Kirk once he discovers his identity, he has a drink with him first and is generally hard to dislike.
* ANaziByAnyOtherName: Kor's control of Organia involves restriction of personal freedoms and mass executions.
* EvilCounterpart: Like Kirk, Kor is a senior field officer, but with the military dictatorship of the Klingon Empire rather than the democracy of the Federation.
* LegendaryInTheSequel
* NotSoDifferent: Kor tries to pull one of these on Kirk, saying they are both warriors on a world of cowards. However, he is horrified when the Organians pull one on him and say one day humans and Klingons will be friends.
* ProudWarriorRace: Unlike many TOS Klingons, Kor does seem to embody this trope.
* YellowPeril: Kor's look was based on Genghis Khan.

[[folder:Tribbles (Themselves)]]

Harmless little fuzzballs featured in three episodes -- "The Trouble with Tribbles" (TOS), "More Tribbles, More Troubles" (TAS), and "Trials and Tribble-ations" (DS9); and cameos in "Star Trek III" and "Star Trek 2009".
* BornAsAnAdult: Which is quite a timesaver
* ExplosiveBreeder
* NowYouTellMe: We stop feeding the tribbles and they stop breeding!
* RidiculouslyCuteCritter
* ThrownOutTheAirlock: Where they'll be no tribble at all.
* WaveOfBabies

[[folder:Gary Mitchell (Gary Lockwood)]]
The antagonist of "Where No Man Has Gone Before." Mitchell was Kirk's best friend until an accident during a trip to the edge of the galaxy gave him extra-sensory perception and psionic powers, leading him to believe that he was becoming a god.

* AGodAmI: He frequently refers to himself as such.
* AntiVillain: At first. His initial acts of villainy are simply attempts to stop Kirk and Spock from killing him out of fear for his power. He gradually becomes more evil over the course of the episode and by the end he's left this trope far behind.
* JerkWithAHeartOfGold: Prior to his transformation.
* GlowingEyesOfDoom: After the accident, his eyes start to glow silver. His eyes return to normal when he's injured or is otherwise prevented from using his powers.
* HoistByHisOwnPetard: [[spoiler:He is killed when he is crushed by rocks while standing in the grave he created for Kirk.]]
* PowerEchoes: He eventually gains this.
* TheStoic: He quickly loses all traces of emotion.
* TragicMonster: As Kirk says, Mitchell never wanted this to happen to him.
* {{Ubermensch}}: He believes that he has become a higher being who is destined to change mankind forever.
* WithGreatPowerComesGreatInsanity

[[folder:The USS ''Enterprise'' (NCC-1701)]]

* CompanionCube: She's like a wife to Kirk and a daughter to Scotty, but everyone on the crew seems to have a certain fondness for the old girl... even Spock.
* CoolStarship: The TropeCodifier.
* [[spoiler:HeroicSacrifice: During ''Film/StarTrekIIITheSearchForSpock''. Note that she was destroyed as part of a (successful) attempt to rescue Spock, who had done the same thing in order to save ''her'' (and all hands) in [[Film/StarTrekIITheWrathOfKhan the previous film]].]]
* SelfDestructMechanism: She has one. Kirk activates it twice. The first time, it was a bluff and he calls it off in the nick of time. The ''second'' time...
* WhatAPieceOfJunk: Over twenty years old by the time Kirk is in command and forty when [[spoiler: she's scuttled]], but still one of the best ships in the Fleet. Don't call her this and insinuate she's TheAllegedCar in front of Scotty however.